<?php
/**
 * Mechanism
 *
 * LICENSE
 *
 * Copyright (c) 2011, Sergey A. Ivonchik <BreatheInMyVoid@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following disclaimer
 *   in the documentation and/or other materials provided with the
 *   distribution.
 * * Neither the name of the  nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @package Mechanism
 * @license http://www.opensource.org/licenses/bsd-license
 * @author Sergey A. Ivonchik <BreatheInMyVoid@gmail.com>
 * @copyright Copyright (c) 2011 Sergey A. Ivonchik
 */

namespace Mechanism\Router\Route {
	/**
	 * Uri route
	 *
	 * This is route for matching uri.
	 *
 	 * @package Mechanism\Router\Route
 	 * @author BreatheInMyVoid <BreatheInMyVoid@gmail.com>
	 */
	class Uri extends Route {
		/**
		 * Default separator for route parts
		 *
		 * @var string $separator
		 */
		protected $separator = '\/?';

		/**
		 * Match path
		 *
		 * This method detects uri in given
		 * path and mathes it.
		 *
		 * @param string $path
		 * @return bool $result
		 */
		public function match( $path ) {
			/* Url decode */
			$path = rawurldecode( $path );

			/* Uri route mathes uri */
			$uri = parse_url( $path, PHP_URL_PATH );
			
			/* Normalization */
			if ( '/' === $uri[0] ) {
				$uri = substr( $uri, 1 );
			}
			
			/* Assemble regex rule */
			$rule = $this->assemble( $this->route );
			
			/* Match path and disassemble */
			if ( preg_match( $rule, $uri ) ) {
				/* Is require params? */
				if ( true === $this->isRequireParams ) {
					/* Have it? Or default, setted?*/
					$params = $this->get( ); 
					
					if ( ( false === $this->haveInUrlParams( $uri ) ) || empty( $params ) ) {
						return false; 
					}
				}
				
				$this->disassemble( $uri );
				
				return true;
			} else {
				return false;
			}
		}

		/**
		 * Assemble regex
		 *
		 * This method assembles regex rule for
		 * path matching. 
		 *
		 * @param array $route
		 * @return string $rule
		 */
		protected function assemble( array $route ) {
			$rule = '/^';
			foreach( $route as $regex ) {
				$rule .= $regex . $this->separator;
			}
			$rule .= '$/';

			return $rule;
		}

		/**
		 * Disassemble path
		 *
		 * This method disassembles given path by
		 * it parameters declarated in pattern,
		 * then it looks parameters in given path and
		 * if it not setted looks it in defaults.
		 * This method setups final parameters of a route
		 * in $this->params array like a:
		 *     $route = array(
		 *         'module' => 'main',
		 *         'controller' => 'index',
		 *		   'action' => 'index'
		 *	   );
		 *
		 * @see $this->get( $name = null )
		 * @param string $path
		 * @return void
		 */
		protected function disassemble( $path ) {
			/* Disassemble raw uri */
			$params = explode( $this->getSeparator( ), ( string ) $path );
				
			/* Set parameters */
			$this->setUpParams( $params, $this->route );
		}
	}
}